Trying out some free vst3 plugins today downloaded from: Plugins / downloads
Renoise 3.4.2 hard crashed, vanished after scanning them (last vsti named VSTISID). The log doesn’t say much, but perhaps you can replicate?
"Audio Plugins: Searching for VST3 plugins in 'C:\Program Files\Common Files\VST3'
Audio Plugins: Searching for VST3 plugins in 'C:\Program Files (x86)\Common Files\VST3'
Vst3Plugs: Instantiating: C:\Program Files\Common Files\VST3\Darvaza.vst3…
Vst3Plugs: Releasing: igorski.nl: Darvaza…
Vst3Plugs: Instantiating: C:\Program Files\Common Files\VST3\Filterstation.vst3…
Vst3Plugs: Releasing: Filterstation.vst3…
Vst3Plugs: Instantiating: C:\Program Files\Common Files\VST3\fogpad.vst3…
Vst3Plugs: Releasing: igorski.nl: FogPad…
Vst3Plugs: Instantiating: C:\Program Files\Common Files\VST3\homecorrupter.vst3…
Vst3Plugs: Releasing: igorski.nl: Homecorrupter…
Vst3Plugs: Instantiating: C:\Program Files\Common Files\VST3\Reason Rack Plugin.vst3\Contents\x86_64-win\Reason Rack Plugin.vst3…
Vst3Plugs: Releasing: Reason Rack Plugin.vst3…
Vst3Plugs: Instantiating: C:\Program Files\Common Files\VST3\regrader.vst3…
Vst3Plugs: Releasing: igorski.nl: Regrader…
Vst3Plugs: Instantiating: C:\Program Files\Common Files\VST3\transformant.vst3…
Vst3Plugs: Releasing: igorski.nl: Transformant…
Vst3Plugs: Instantiating: C:\Program Files\Common Files\VST3\vstsid.vst3…
Vst3Plugs: Releasing: igorski.nl: VSTSID…
"
After rebooting Renoise the plugins are included in the lists so it still worked after all.